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No. 554,010. 1 Patented Feb. 4, i896.

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J. P. STEWARD. MOWER.

N0.554,01o. A Patentedeb, 1896.-

UNITED STATES JOHN F. STEW'ARD, OF QIHCAGO, ILLINOIS.

lVIOWER.

SPECIFICATION forming .part of Letters Patent No.. 554,010, dated February 4, 1896. Application filed May 8, 1893- Serial No. 473,469, No modeln To all whom it may concern.'

Be it known that I,`JoHN F. STEWARD, of (Ehieagojn the county of Cook and State of Illinois, have invented certain ne\vand useful lm provements in Mening-Machines, of `Wh ich the following is a'full description, reference being had to the accompanying drawings, in which Figure l is a plan view of the mowing-machine complete aside from a portion ofthe tongue and cutting apparatus. Fig. 2 is a sectional side elevation of certa-in parts of the frame and gearing as if cut on thef line 2 of Fig. l. Figs. 3, 4, 5, G, and 7 are seetional views showing the mechanism for throwing the cutting apparatus into and out of operation and theball and roller bearings for the gearing. Fig. 8 shows the construction of the roller-hearingrs.` i

A is the main frame or gearinglcarriage of the inowing-machine, and l and B supporting-'wheels for the same. To this gea-ringearriage is suitably soeketed the drafttongue C. Reaching' from and connecting Wheel to wheel is the axleD passing through the transverse sleeve-like portion a ofthe frame A. As one partwith the sleeve a is the sleeve a. Through th is passes the crank-shaft E, having at its forward end the usual balance-wheel and crank-wrist. This sleeve is placed in a lower position than that of a, so that the crankshaft can pass beneath the axle. The said shaftisjournaledinbushings@ande. Reaching rearward from the main transverse portion of the frame is the strong arm o?. This terminates at its rear in a transverse sleeve l?, in which is placed a short shaft. G, that is both free to rotate and to niove endwise. Upon the axle adjacent lo the wheelv l is tthe spur-gearfll', and upon the shaft G is the pinion I and the bevel-gear J, the said pinion and gearbeing preferablyniade as one piece.,`

Upon the rear end of the crank-shaft is secured the pinion K. From the wrist of the crank-wheel to the cutting apparatus L passes the pitman lhc forward advance of the machine over the ground imparts, through lhe gearing, motionto the cutting apparatus in the usual manner. The said eut-ting apparatus is secured to the main frame by a snit-able coupling-frame and is raised and lowered by theusual levers. For throwing "out-of-gear position.

the cutting apparatus into and out of gear I employ the following means, of which reference to Figs. and (i will show the details of construction: Upon the shaft G is the collar g, shown as resting against a shoulder upon the said sha-ft, simply because of ease of construction, but the collar may be considered as one piece with the shaft.

The left-hand end of the shaft G is reduced and threaded at y'. etween the collar f/ and the -nut g2, that is screwed onto the threaded end of the sha-ft, is the pinion I and the hub of the bevel-gear J. Beca-use of the freedom of the shaft G to be' moved endwise and carrywith it the bevel-gearing a movement of the said shaft to the right, when considering Fig. l, carries the bevel-gear J into mesh with the pinion K. I Movement of the said shaft lto the left carries-the gear out of mesh with the pinion. Bythe simple movement ofthe shaft the shifts into and ontol gearmay beaeeomplished. In order that the shaft may lit snugl)v in the frame l prefer to coro, out the latter and pour molten Babbitt metal around v it. To. aid in throwing the shaft G longitudinally l provide a cam f, preferably in the form of aygroove, withinpthe enlarged right end of the `sleeve F and into the shaft G thrust the pin g4. This cam4groove is part of a spiral, as shown in Fig. l. M is the shifting. lever, pivoted at m to the shaft G and having within a recess the spring on' and upon the side adj aeent -to the cam f the catch mi. The spring m is placed so that its lower end shall rest upon the` shaft G at a point to the right of the axis of the lever, the result yof which isti-he tendency to hold the lever always to the left andthe catch .m2 into engagement with the stops m* and mi on the. sleeve F.

In Figs. 5 and (i, which show the parlsas 4if cut on a vhorizontal plane, the catch is shown engaging the stop In when in its ingear position and in Fig. 6 the catch min its I have made the sha-ft G so stron g that the bevel-gearing and pinion may over-haiiglthat is to say, be sus- 'pended 'on a shaft having a supported end. v

'l`his`enables me to dispense with all frame.- worliliat-,has usually been necessary for snp porting the end ef shafts the equivalent of G between the gear ll and the supper-lingwheel 'li'.

IOO

- in the nut that prevents the letter from turn- In order to reduce the friction of the vitrious shafts l provide roller-hearings, boring out the sleeve o, of the main frame at iis'two ends :1nd plaeing therein antifrietion-rollers.I preferably of the Construction shown@ in Fig," S, said hearings Consisting in ranging' e series of trucks around the shaft `and within the sleeve of the freine. The huh oi the spurpinion and hevehgenr is enlarged to permit; of the plseenient of a series of these trucks n-round that part of the shaft G upon which the said pinion and bevel-gear revolve. There is, of Course, atendeney to move the bevelgear out ol mesh with the pinion it drives. To prevent this in n. wey that shell he littie productive of friction es possible I provide the eireuxnforentially-grooved nut q2, and in the end of the huh of the pinion provide L corresponding groove opposing the seme, and between the two place a single hall The reduced end of the shaft Gis threaded and the nut screwed thereon to any distance necessary to hold the hevehgeer in proper mesh with the pinion. A pin g is inserted through holes in the shaft und through slots ing oil. The trueksfor the roller-hearings I prefer to efmstruet, es shown in Fig. 8, of s. hm' N, having T-hends n und n ind the rollers nu phieed between. The Tdiends project s little distance heyon d the rollers, so that when ranged around the shari the said heads :ahnt against eneh other nud prevent the rollers from Corning in Contact. in order that the trucks nifty easily he slid in place \\'itl1oi1ttlie T-hends so catching te prevent them from sliding to the home pos `ion, l bevel the eerners hf", ns shown in il in order to prevent grass from entzingg'ling with the bevel-gear l provide n shield U, se cured to lugs hy oolts o, on the arm F, and partly ine'losing the bevel-gee r and having the lugs o :md o2.

P is e shield for the pinion ond spur-gear secured hy means of bolts p, riveted thereto, and passing through the lugs o an d o' upon the shield O end secured to the main frame hy t holt passing through the lug,r a5.

I place the bushing e into the sleeve d' loosely enough to he easily inserted, sind to prevent itfroni rotating;r apply the boss e4, that is recessed into the sleeve, and ineke the sziid boss serve es en oileup. The sleeve e' is 'prefere-bly tightly fitted and is held from rotating by the oil-cup' e, which is screwed through the shell of the sleeve and into the said bushing. y

W'hat I elztin es my invention, and desire to secure hy Letters Patent, is

1 In e mowingmmehine, and in eombinzb tion with the main lreme,the driving-gear, the pinion K, a. support F, e shaft G, :L bevel-gear and pinion es I, J, supported upon the said shaft, L s rinrheld pivoted shipping-lever, secured to said shaft in such e manner as to turn it in its bea-ring, a earn formed around the said shaft G and having the stops m4 end mi arranged substantially as described and :i catch upon the said lever adaptedl to engage stops so as to hold the lever in its extreme positions of movement, all arranged and coinhined whereby the rocking movement of the seid shaft, by means of the said spring-held pivoted lever, moves it in a longitudinal direetion and thus forces the hevehgeztr into and out of en gegement with the pinion :md holds them in either of said positions, substantially :is described.

In Combination with n shaft md the hubs of gears or of e frame mnyhe'required, sind hub or said treme mounted thereol'nzi series of trucks formed of rollers sind having the hevoled T ends, substantially es described JOHN F. STENARD. 

